Mosley, who played 134 snaps the first four games, made five tackles against the Bears.

“C.J. played extremely well,” Mularkey said. “It’s really been a lot about the production when Terrance has been in there. C.J. has made more plays when he’s had the opportunity. Terrance played well against Minnesota [in Week 1] but has had somewhat of a drop-off since then, and C.J. has climbed his way up.”

Lane had four tackles and one sack — the Jaguars’ first in three games and his first since last September. He got the start after making his season debut vs. Cincinnati.

“In the run game, yes [there was improvement],” Mularkey said. “Austen is just seeing a lot more, and you can tell by his production in the run game. He was stouter.”

Ross on returns

Although he didn’t have an attempt, Aaron Ross debuted as the Jaguars’ punt returner.

Part of the reason was the increased workload for receiver Mike Thomas, who started for an injured Laurent Robinson. But another reason was because the Jaguars are tied for 28th in the NFL with a 6.0-yard average.

“We’re just seeing if we can get a spark,” Mularkey said.

Newcomer Micheal Spurlock, inactive on Sunday after being signed Friday, could be an option in the return game after the bye.

Injury update

Robinson (concussion) has not been cleared and will not practice this week, the Jaguars could get outside linebacker Daryl Smith (groin) back for the Oakland game.

“We’re certainly hoping,” Mularkey said. “I’m not going to say it’s a definite. We’re going to be smart with him this week. I know he would like to play.”

Smith has missed all five games this year.

Safeties Dwight Lowery and Dawan Landry were shaken up on Sunday but returned to the game.

Let’s play two?

Jaguars owner Shad Khan recently told Sports Illustrated it is “highly likely” his team might eventually play two home games per year in Europe.

Jim Woodcock, a spokesperson for Khan, said in an email to the Times-Union that the Jaguars owner likes to “look forward and think about big-picture possibilities and the potential to raise the visibility of the team and the city of Jacksonville in Europe, but there are no plans in the works for the Jaguars to actually play a second game in Europe. Also, the league hasn’t even authorized a second game, so the Jaguars are putting all their focus on preparing to play one game a year in Europe for the next four years.”

The Jaguars are scheduled to play a game in London from 2013-2016.

Four days off

The Jaguars had Monday off and will practice on Tuesday and Wednesday (no pads) before having four consecutive days off.

Mularkey said Tuesday morning will be spent reviewing the Chicago game.

“I’ll address what we want to get accomplished and where we’re at as a team,” he said. “We certainly want them to get away a little bit so they can get healthy, feel better about themselves and know there are still a lot of games to be played.”

Mularkey said the two practices will be “pretty stressful” and focus on fundamentals.

Etc.

The Jaguars’ offense entered Monday night’s game last in yards (241.2 per game), passing yards (142.8) and scoring (13.0 points per game). … Mularkey said the Jaguars considered giving backup QB Chad Henne mop-up experience against Chicago. “We went to our other no-huddle segment and wanted to get Blaine [Gabbert] some experience at it.”